Another Earthquake in Cleburne

There was another earthquake in cleburne a few days ago.  Everyone is probably getting used to them by now.  Here is a report on gas well drilling and earthquakes in north texas:www.smu.edu/newsinfo/pdf-files/earthquake-study-10march2010.pdf.

I guess the earthquakes aren't a big deal, But I wonder how much water is being depleted from our aquifers due to all the drilling activity.  Here is a map showing the wells in cleburne. The red circles are gas wells.  It's no wonder that there are a few earthquakes in the area.

The gas is down deep below the aquifers, I get that, but what about all those holes drilled though them.  Each pentagon on the map represents two holes in the aquifer,one in the top, and one at the bottom. The source rock for the ground water must be starting to look like swiss cheese.  I guess this is probably not a big deal either.  However, the depletion of water in the aquifers is probably a big deal.   A lot of ground water is being used in fracturing these wells and it's all being pumped out of the aquifers.